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Whatman Glass Microfiber Filters Air Sampling Filters Quartz Filters ¨C QM-A



High-purity quartz (SiO2) microfiber filters are used for air sampling in acidic gases, stacks, flues and aerosols, particularly at high temperatures up to 500¡ã C and in PM-10 testing. Because of the low level of alkaline earth metals, ¡®artifact¡¯ products of sulfates and nitrates (from SO2 and NO2) are virtually eliminated. QM-A, sequentially numbered according to EPA standards, is suitable for most applications.


Typical Properties - Binder-Free Glass  Microfiber Grades
Grade Description     Particle 
Retention           
in Liquid (¦Ìm)
Air Flow (s/100
 mL/in2)                
   Typical
  Thickness
   (¦Ìm)
     Basis
    Weight
    (g/m2)
QM-A Quartz 2.2*     6.4                             450                   85



Ordering Information - Air Sampling Filters and Quartz Filters
Catalog Number                          Description

Grade QM-A

1851-025 Grade QM-A Circles, 25 mm 100/pk
1851-032 Grade QM-A Circles, 32 mm 100/pk
1851-037 Grade QM-A Circles, 37 mm 100/pk
1851-047 Grade QM-A Circles, 47 mm 100/pk
1851-050 Grade QM-A Circles, 50 mm 100/pk
1851-055 Grade QM-A Circles, 55 mm 100/pk
1851-070 Grade QM-A Circles, 70 mm 100/pk
1851-082 Grade QM-A Circles, 82 mm 100/pk
1851-085 Grade QM-A Circles, 85 mm 100/pk
1851-090 Grade QM-A Circles, 90 mm 100/pk
1851-101 Grade QM-A Circles, 101.6 mm 100/pk
1851-110 Grade QM-A Circles, 110 mm 100/pk
1851-118 Grade QM-A Circles, 118 mm 100/pk
1851-150 Grade QM-A Circles, 150 mm 100/pk
1851-865 Grade QM-A Sheets, 8 x 10 inches 25/pk
1851-8866 Grade QM-A Circles, 8 x 10 inches Numbered 100/pk

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